"She's been a cornerstone of the network for over the past ten years and there was just no way we were going to let her get away," said NBC Entertainment chairman Robert Greenblatt. "It's a measure of our esteem for her as a writer, actress and producer - she's in a class by herself."

Greenblatt confirmed that any new shows Fey develops will likely land at NBC, but added that Universal TV could also license her series to a rival network.

"We would love to have her all over NBC in front of and behind the camera," he admitted. "But if she's got something great that's ripe for another network, that's something we'll embrace."